Lyon County Weather and Climate Synopsis



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36 Hr. Forecast Map
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Satellite images from NOAA

Weather Summary

Hourly Observations

Nowcast

Precision Ag., Lawn & Garden Guidance

7 Day Forecast

Medium & Long Range Outlook

Almanac

Historical Facts


US Weekly Rainfall Departure		US Weekly Temperature Departure

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A joint service of the UK Ag Weather Center and the National Weather Service.


Weather Summary for Iowa
National Weather Service Des Moines IA
1255 AM CDT Fri Apr 26 2024

Today: 

Clouds had spread over the state early this morning and winds from 
the southeast were averaging 10 to 20 mph with gusts to near 30 mph in
some places. Over western Iowa, showers and storms were just crossing
the Missouri River into western Iowa after midnight this morning. 
Temperatures in most locations were in the 50s.

The showers and embedded thunderstorms will move into central Iowa by
sunrise today and spread across eastern Iowa this morning. As this 
wave of precipitation moves out later this morning and afternoon, 
clouds will remain over northern into central Iowa with some breaks of
sunshine over southern Iowa, particularly southwest. Strong to severe
storms are expected to develop near the Missouri River late this 
afternoon and push into western and central Iowa this evening and 
eastern Iowa late evening and after midnight. Large hail, a few 
tornadoes, and strong wind gusts will be possible with this activity. 

In addition to the stormy weather, it will be breezy with wind speeds
averaging 15 to 25 mph and gusts of 25 to 35 mph much of the time 
today and through this weekend as well.

Tonight and beyond: 

There should be a break in widespread activity after the storms exit
tonight until later Saturday afternoon when strong to severe storms 
are once again expected. In addition, storms moving over the same area
with little break between rounds may result in ponding in low lying 
and poor drainage areas and perhaps localized flooding as storms
continue into Saturday night. There may be some lingering showers or 
storms on Sunday, but another round of strong to severe storms will 
be possible later in the day into the evening. Anyone with outdoor 
plans should have ways to receive weather warnings and know where 
nearby shelter is located in case threatening weather nears their 
location.

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For LYON County

For Your Farm PointAgCast...Click here.

Regional Hourly Observations For LYON County
Issued at 1200 PM CDT FRI APR 26 2024

NORTHWEST IOWA CITY SKY/WX TMP DP RH WIND PRES REMARKS DENISON FAIR 54 54 100 SE22G36 29.55F TC 12 ESTHERVILLE CLOUDY 50 47 89 SE33G45 29.62F TC 10 MAURICE CLOUDY 50 50 100 SE29G41 29.49F FOG TC 10 SHELDON CLOUDY 48 48 100 SE25G33 29.52F FOG TC 9 SIOUX CITY CLOUDY 54 53 97 SE23G33 29.49F TC 12 SPENCER CLOUDY 51 47 86 SE26G39 29.58F TC 11 STORM LAKE PTSUNNY 50 50 100 SE22G33 29.57S TC 10

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel
Current Agricultural Weather Conditions in Iowa
Based on observations at 1200pm CDT, Friday April 26, 2024

Across Iowa...temperatures are near 54 degrees west, near 53 degrees central, and near 47 degrees east. Current sky conditions are cloudy west, cloudy central, and light rain east. In the west, relative humidity is near 97%, and the dew point is near 53 degrees. In the central part of the state, relative humidity is near 89%, and the dew point is near 50 degrees. In the east, relative humidity is near 90%, and the dew point is near 44 degrees. Winds are from the southeast at 23 mph with gusts at 33 mph west, where conditions are not favorable for spraying due to strong winds. Winds are from the east at 22 mph with gusts at 29 mph central, where conditions are not favorable for spraying due to strong winds. Winds are from the east at 14 mph east, where conditions are not favorable for spraying due to strong winds and light rain. Based on current available observations, the highest temperature is 59 degrees at Clarinda. The lowest temperature is 47 degrees at Davenport and Clinton.

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For LYON County,IA

514 AM CDT Fri Apr 26 2024 DAY ONE Today and tonight. Ongoing rain and scattered thunderstorms early this morning will diminish in coverage by mid morning. These storms will not be severe, but locally heavy rainfall is possible early this morning. Additional storms will develop mid to late afternoon, and move northeast across the area through this evening. Strong to severe storms are possible. The greatest threat would be large hail up to golf ball size, perhaps up to 2 inch in diameter with the strongest storms. A few storms may also be capable of producing damaging wind gusts or tornadoes, with this threat more likely limited to areas south of US Highway 18, and especially toward the US Highway 20 corridor. DAYS TWO THROUGH SEVEN Saturday through Thursday. Another round of showers and thunderstorms is expected Saturday night and Sunday. While there is more uncertainty regarding how storms will evolve during this period, there is a Level 1 of 5 risk for a few strong to severe storms in portions of northwest Iowa late Saturday night into Sunday. SPOTTER INFORMATION STATEMENT Spotter activation is possible between 3 PM and 9 PM CDT today.
NWS Severe Weather Map , Convective Outlook

7-Day Forecast For LYON County, IA
1159 AM CDT Fri Apr 26 2024 REST OF TODAY
Cloudy with a chance of thunderstorms. A chance of showers. Breezy, cooler with highs around 60. Southeast winds 20 to 25 mph with gusts up to 40 mph. Chance of rain 50 percent.
TONIGHT
Cloudy. Showers and thunderstorms, mainly in the evening. Breezy with lows around 50. Southeast winds 15 to 25 mph with gusts up to 35 mph, becoming southwest around 15 mph with gusts up to 25 mph after midnight. Chance of rain 90 percent.
SATURDAY
Mostly cloudy. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 25 mph, becoming northwest in the afternoon.
SATURDAY NIGHT
Cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Lows in the upper 40s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent.
SUNDAY
Showers with a chance of thunderstorms. Highs in the lower 60s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.
SUNDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 40s. Chance of rain 70 percent.
MONDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs around 60.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
TUESDAY
Mostly sunny. A chance of showers in the afternoon. Warmer with highs in the lower 70s. Chance of rain 30 percent.
TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. A 40 percent chance of showers. Lows in the mid 40s.
WEDNESDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 40 percent.
WEDNESDAY NIGHT
Partly cloudy. Lows in the mid 40s.
THURSDAY
Mostly sunny. Highs in the mid 60s.
12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2
Medium & Long Range Outlook For Iowa IOWA --------------------------------------------- 6 TO 10 DAY 8 TO 14 DAY 30 DAY 90 DAY MAY 1-MAY 5 MAY 3-MAY 9 JUN JUN-AUG ----------- ----------- -------- --------- Temperature: Above Above Precipitation: Above Above .... Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information
Friday April 26, 2024 the 117th Day of Year --------------------------------------------------- SUN Declination 14.010000 Distance 0.999718 AU Rise 07:15 EDT Set 21:09 EDT Transit Meridian 14:11 EDT Civil Twilight Begins 06:46 EDT Ends 21:38 EDT Calculations made for central point in the state. Time in ET -- and will vary due to location and elevation -- Priddy

Historical Weather And Climate Facts For Today

APRIL 26TH HISTORIC WEATHER EVENTS ...1834... Killer frosts were reported in the Deep South. The frost was quite severe around Huntsville AL, and highlighted a backward spring in the South that year. (David Ludlum) ...1978... An unusually strong occluded front swept out of the Gulf of Alaska and produced the first April thunderstorm of record at Fairbanks. Pea size hail fell northeast of Fairbanks from thunderstorms whose tops were less than 8000 feet. (The Weather Channel) ...1984... Severe thunderstorms associated with an intense cyclone spawned a total of forty-seven tornadoes in two days from Louisiana to Upper Michigan. The tornadoes killed 16 persons and injured 259 others. (Storm Data)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky